The next step is to thoroughly, clean the guitar. Dust and dirt accumulated on the guitar not only affects the tonal quality but, also affects the health of the guitar and its wood. Hence, it is very important to clean the whole guitar before putting on the new strings. Often a large amount of dirt is accumulated on the fret board. This dirt considerably deteriorates the pleasant tone. Cleaning this dirt from between the frets is also important. Usually easier to play You have a couple of choices here. But basically, you would use the relative minor pentatonic, or, the minor pentatonic a tone below the root of the dom7 chord. How to learn guitar Major scales: Styx' Tommy Shaw offering limited edition guitar string bracelets for charity